[sane-devel] Canon LIDE 220

[John Weber]

I did 'make'. I wouldn't have backend/.libs/libsane-genesys.so 
otherwise, right?
$ ls -l backend/.libs/libsane-genesys.so
lrwxrwxrwx 1 jweber jweber 25 Jun 30 08:25 
backend/.libs/libsane-genesys.so -> libsane-genesys.so.1.0.25*
$ ls -l backend/.libs/libsane-genesys.so.1.0.25
-rwxrwxr-x 1 jweber jweber 1446816 Jun 30 08:25 
backend/.libs/libsane-genesys.so.1.0.25*

John

On 06/30/2015 10:44 AM, m. allan noah wrote:
> You still have to 'make'.
>
> allan
>
> On Tue, Jun 30, 2015 at 11:03 AM, John Weber <jweber53 at gmail.com> wrote:
>>
>>
>> On 06/29/2015 01:57 PM, Stef wrote:
>>>
>>> On 23/06/2015 16:08, John Weber wrote:
>>>>
>>>>
>>>>
>>>> On 06/22/2015 10:40 PM, Stef wrote:
>>>> Hi Stef,
>>>>
>>>>> Debug levels are defined like this for genesys_low:
>>>>>
>>>>> genesys_low.h:#define DBG_io          6    /* io functions */
>>>>> genesys_low.h:#define DBG_io2         7    /* io functions that are
>>>>> called very often */
>>>>> genesys_low.h:#define DBG_data        8    /* log image data */
>>>>>
>>>>>       So if you get the problem at log level below seven, we must look at
>>>>> DBG_data usage in genesys_low.c . But here isn't on. So try 7 and 6 as
>>>>> debug levels. Once we know the exact kind of logging level that fix this
>>>>> timing issue, the next step is to remove this messages one by on until
>>>>> you find the one that makes difference. I haven't seen nothing obvious,
>>>>> so experimenting/testing is needed.
>>>>>
>>>>>       sanei_genesys_wait_for_home(), sanei_genesys_set_buffer_address()
>>>>> and sanei_genesys_write_ahb functions() are printing messages in the
>>>>> middle of the code and are first candidates to try, in this order.
>>>>>
>>>>
>>>> It works at debug level 7, but not 6. I'm not sure from the rest of
>>>> your answer if there's testing you want me to do, or if it's just
>>>> informational. I'm a retired sys admin/engineer but not much of a
>>>> programmer. I'm willing to test more, but I'll need more detailed
>>>> instructions.
>>>>
>>>> Thanks,
>>>>
>>>> John
>>>>
>>>       Hello,
>>>
>>>       I was expecting something like that.
>>>
>>>       All DBG_io2 a mere traces, and I don't see how much they slow down
>>> things. Since I don't have this kind of problem on my hardware, I need
>>> your help. I don't see no other approach than trial and error.
>>>
>>>       1 - compile sources
>>>       2 - set logs to 7
>>>       3 - check that scanner is working with compiled sources and the log
>>> level
>>>       4 - change a line where there is DBG_io2 level in DBG_data so it
>>> isn't traced any more, write down the line number
>>>       5 - compile and run, if it is still working, go to step 4 and
>>> change one more debug trace
>>>       6 - since it isn't working anymore, you have find where a pause
>>> must be set, please send it to me
>>>
>>>       There are tutorials to build SANE from sources, one thing I like to
>>> do is to run the freshly compiled version without doing make install,
>>> when running scanimage from top source directory:
>>>
>>> export LD_PRELOAD=backends/.libs/libsane-genesys.so
>>>
>>>
>>>
>>
>> Hi Stef,
>>
>> I followed the first part of instructions at
>> https://help.ubuntu.com/community/CompileSaneFromSource just to get the
>> source and dependencies. Since I didn't plan on doing make install, per your
>> suggestion, I only used
>>
>> ./configure --enable-avahi
>>
>> and it ran with exit code 0.
>>
>> After setting
>> export LD_PRELOAD=backend/.libs/libsane-genesys.so
>>
>> Now both
>>
>> ./frontend/scanimage -L
>> /usr/bin/scanimage -L
>>
>> report no scanners found. In another shell without LD_PRELOAD set,
>> /usr/bin/scanimage -L reports
>> device `genesys:libusb:001:020' is a Canon LiDE 220 flatbed scanner
>> as usual. ./frontend/scanimage -L still says no scanners found. I tried all
>> scanimage -L tests also with sudo, but it made no difference.
>>
>> Should I use other configure options? Testing by trial and error won't be
>> too bad. It only took 80 secs to compile.
>>
>> --
>> John Weber
>> jweber53 at gmail.com
>>
>>
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>
>
>

-- 
John Weber
jweber53 at gmail.com